function c = diff(c)
   % DIFF differentiate each trace.
   %
   % C = DIFF(C) differentiate each trace through a call to WAVEFORM/DIFF.
   % See WAVEFORM/DIFF for details
   
   % Author: Michael West, Geophysical Institute, Univ. of Alaska Fairbanks
   % $Date$
   % $Revision$
   
   
   c.traces = diff(c.traces);
end